Portable Mercurial on Windows

[Snidely]

I'm running TortoiseHG on my home computers, but have to work on a
school lab computer sometimes, and I'd like to be able check in files
when I'm there.

Kinda like the OP in <http://www.selenic.com/pipermail/mercurial/2009-
August/027273.html>.

Is the advice in that correspondence still good with the 1.9.x Hg and
the 2.1.x Terrapins?

I've also looked at <http://stackoverflow.com/questions/1904419/
running-mercurial-on-a-flash-drive>.

I'll probably need at least the 32-bit version for XP, Vista, and W7
hosts; any issues with using it on 64-bit machines?  Although, at 80
MB, my flash stick ought to be able to hold the 64-bit flavor for
those trips to the better Vista and W7 machines.

/dps